Feed-water heater.



C. V. WALLACE.

FEED WATER HEATER.

APPLICATION r1121) 1,111.11. 1915.

Patented Oct. 19, 1915.

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CHARLIE V. WALLACE, 0F TULSA, OKLAHOMA,

ASSIGNOR, BY MESNE ASSIGNMENTS,

TO ECONOMY FEED WATER HEATER COMPANY, GE TULSA, OKLAHOMA, A CORPO- nar olv.

FEED-WATER HEATER.

Specification of Letters Patent.

Patented Oct. 19, 1915.

Application filed January 11, 1915. Serial No. 1,665.

useful impr vements in a feed water heater adapted for use in connection with steam boilers, and while I have in the present instance shown it as employed in connection with a locomotive boiler, I wish it to be understood that it is not limited in its application to this particular purpose, as it may be employed equally as well with stationary boilers.

In carrying out my invention it is my purpose to provide a heating coil which is located in the smoke box of the engine, and through which coil the water passes before it is introduced into the boiler. The result is that the cold water flowing through an inlet pipe leading to the coil is heated in its .passage through the coil and is introduced into the boiler in a heated state. Furthermore, there is a constant circulation of the water through the coil, so that, although the coil is devoid of any protective casing, the destruction of the coil due to the heat of the lire box will be avoided.

Another object of the invention is the provision of a heater which is adapted to be placed in the smoke box below the water level of the boiler, said heater being provided with an inlet pipe equipped with two check valves, one of which. is connected with the boiler, while the other is connected to the inlet pipe between the ordinary injector and the check valve connected with the boiler. Bv such construction the check valve con nected with the boiler may be opened to insure the filling of the coil with water while the check valve located between the boiler check valve and the pump or injector may be closed to hold the water from flowing back to the pump. Should a fire be started in. the boiler the heating coil will not be burned out inasmuch as it will be filled with water bv the arrangement above mentioned.

Another object of my invention is the provision of a feed water heater which will embody the desired features of economy, simplicity and efliciency and convenience.

With the above recited objects and others of a similar nature in view, my invention consists in the construction, combination and arrangement of parts set forth in and falling within the scope of the appended claims.

In the accompanying drawings: Figure 1 is a view in side elevation of a conventional form of locomotive provided with my invention, a portion. of the wall of the locomotive being broken away to more clearly illustrate the arrangement of parts. Fig. 2 is a front view with the front of the locomotive removed and showing the location of the heater in the smoke box thereof.

Referring now to the accompanying draw- 1ngs in detail, the letter A indicates conventionally a portion of the locomotive boiler equipped with the usual fire tubes or flues 1, while 2 is the water leg surrounding the ire box. The smoke box at the front of the furnace is indicated by the numeral 3 and the front wall of the smoke box is formed by a permanent section 4 and a movable door 5 hinged thereto, this door being capable of being opened and closed to permit ready access to the smoke box. Located within the smoke box of the furnace is a vertical heater coil 6 formed of a compound bank of tubes, the lower end of the coil shown at 7 being connected to the inlet or cold water su mlv pipe 8 throu h the union 7. this pipe 8 leading rearward of the locomotive to the usual injector or pump (not shown). The upper end 9 of the coil is also connected through the union 9 with the pipe 10 which extends along the outside of the boiler rearwardly thereof, and is provided with a dependent section 11 which leads into the water leg of the boiler at 12, this pipe 10 and section 11 forming a return or hot water pipe. A short pipe section 13 connects the boiler with the inlet or cold water pipe 8, and is controlled by the check valve 14. A second check valve 15 is interposed in the inlet pipe between the valve 14 and the injector or pump so that water is prevented from flowing back from the coil to the pump when the valve 14 is opened. A suitable valve, such as a globe valve 16 is placed in the section 11 of the return pipe 10 and preferably adjacent the water leg.

From'the above description, taken in connectlon with the accompanying drawings,

the construction and operation of my invention will be readily apparent to those skilled in the art. When it is desired to have feed water supplied to the boiler, the valve 15 is opened and the valve 14 closed, while the valve-16 is also opened so that the water from the injector or pump will flow through the pipe 8, through the coil, being heated in its passage through the latter, and thence ter burning out when the fire is again started in the fire box.

It will be noted that the entire device is located below the water level of the water in the boiler and thus I insure that the proper circulation will be obtained. Furthermore, I connect or fasten the coil to the hinged door of the smoke'box through the medium of vertical hanger bars 17 and connect the ends 7 and 9 to the pipes S and 10 by means of couplings or unions 7 and 9 respectively, so that when desired these two unions may be disconnected and the heater raised with the smoke box door to be entirely out of the way when it is desired to have access to the smoke box. It will be noted that the coil is heated from the heat within the fire box, and therefore, no extra device is required for heating the coil, thus accomplishing'a considerable saving of fuel.

What I claim is:- .1. The combination, with a steam boiler including a smoke box, of a heater coil located within the smoke box and having an inlet end and an outlet end, said coil being 1 ply and coupled to the inlet end of the coil,

an outlet pipe coupled to the outlet end of the coil and leading back to and eommuni-' eating with the boiler, a valved connection between the boiler and the supply pipe, and a check valve arranged directly in the supply pipe, and located between the valved connection to the boiler and the source of cold water supply.

52. The combination, with a steam boiler including a smoke box, and a door therefor, of a heater coil located within the smoke box and having inlet and outlet ends extending externally through said door, said coil being located below the level of the water in the boiler, a cold water supply pipe leading from a suitable source of supply to the inlet end of the coil, an outlet pipe leading from the outlet end of the coil back to and communicating with the boiler, a conducting connection between the boiler and the supply pipe, said connection being disposed at a point between the source of water supply and inlet end of the coil, a valve in said connection, a controlling valve in the supply pipe between the source of water supply and said connection, a valve in the outlet pipe, and unions detachably coupling the supply and outlet pipes to the inlet and outlet ends of the coil on the exterior of the door.

In testimony whereof, I aliix my signature, in the presence of two witnesses.

CHARLIE V. WALLACE.

Witnesses:

L. T. RUIZ, ROLAND A. FELT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

